RD52.1-7N-055-L-NN-FW

The Bosch Rexroth Indramat RD52.1-7N-055-L-NN-FW is a high-performance unit in the RD 500 Drive Controllers series, designed and manufactured by Bosch Rexroth Indramat. As a DC supply inverter, it operates on a Nominal Connecting Voltage of DC 530-670 V and delivers a Rated Power of 55 kW. This inverter without a built-in brake chopper provides precise control of various induction and synchronous motors, leveraging its modular architecture to adapt to a wide range of industrial applications.

Featuring a robust power section engineered for forced air cooling, the RD52.1-7N-055-L-NN-FW ensures efficient heat dissipation through rear-mounted cooling elements. The inverter delivers its nominal output under ideal conditions at a pulse frequency of 4 kHz, though performance will vary with ambient conditions and load requirements. The absence of a built-in brake chopper simplifies the design and reduces maintenance, while liquid-cooled variants with external heat exchangers remain available within the series. Bosch Rexroth Indramat provides two commissioning methods—an operator panel and PC-based software—both of which facilitate straightforward setup and parameterization.

Additional design considerations enhance compatibility, durability, and operational efficiency. The controller requires a minimum airflow of 0.2 m³/second, generated by external fans or blowers, to maintain optimal operating temperatures. For storage, Bosch recommends a dry, clean environment between –25 °C and 70 °C, with temperature fluctuations limited to 20 K per hour to avoid damage. Electrolytic capacitors in the converter and supply modules must not remain unpowered for more than two years. With global shipping and a one-year warranty offered by Wake Industrial, the RD52.1-7N-055-L-NN-FW drive controller delivers reliable performance and ease of integration, making it an ideal choice for demanding industrial drive applications.